Characterization of complexes formed by mixing aqueous solutions of poly(2-ethyl-2-oxazoline) and poly(methacrylic acid) with a wide range of concentrations

Yasuhiro Matsuda, Kazumasa Takatsuji, Yasunori Shiokawa, Moriya Kikuchi, Satoru Kidoaki, Atsushi Takahara, Shigeru Tasaka

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Complexes were formed by mixing aqueous solutions of poly(2-ethyl-2- oxazoline) (PEOX) and poly(methacrylic acid) (PMAA) with a wide range of concentrations and were characterized with infrared and X-ray photoelectron spectroscopy, light scattering and intrinsic viscosity measurements. The infrared and X-ray photoelectron spectra indicated that PEOX and PMAA formed complexes by hydrogen bonds between the carbonyl groups in PEOX and the hydroxyl groups in PMAA but not between the nitrogen atoms in PEOX and the hydroxyl groups in PMAA. The results of light scattering and intrinsic viscosity measurements suggest that PEOX and PMAA first form complexes with high polymer chain density and that the complexes became large in size. The dependence of the precipitation concentration on the molecular weight of PEOX was also determined, and its unique dependence was discussed based on the experimental results.

Original languageEnglish
Pages (from-to)1896-1904
Number of pages9
Journalpolymer
Volume54
Issue number7
DOIs
Publication statusPublished - Mar 22 2013

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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